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[1]解增援,李爱群,李建慧,等.施工阶段自锚式悬索桥超宽混凝土箱梁纵向应力分析[J].南京工业大学学报(自然科学版),2019,41(01):104-111.[doi:10.3969/j.issn.1671-7627.2019.01.016]
 XIE Zengyuan,LI Aiqun,LI Jianhui,et al.Longitudinal stress of super-wide concrete box girder of self-anchored suspension bridge during construction process[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2019,41(01):104-111.[doi:10.3969/j.issn.1671-7627.2019.01.016]
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施工阶段自锚式悬索桥超宽混凝土箱梁纵向应力分析()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
41
期数:
2019年01期
页码:
104-111
栏目:
出版日期:
2019-01-28

文章信息/Info

Title:
Longitudinal stress of super-wide concrete box girder of self-anchored suspension bridge during construction process
文章编号:
1671-7627(2019)01-0104-08
作者:
解增援1李爱群12李建慧3周广盼1
1.东南大学 土木工程学院,江苏 南京 210096; 2.北京建筑大学 土木与交通工程学院 北京 100044; 3.南京林业大学 土木工程学院,江苏 南京 210037
Author(s):
XIE Zengyuan1LI Aiqun12LI Jianhui3ZHOU Guangpan1
1.School of Civil Engineering,Southeast University,Nanjing 210096,China; 2.School of Civil and Transportation Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044,China; 3.School of Civil Engineering,Nanjing Forestry Univers
关键词:
超宽混凝土加劲梁 自锚式悬索桥 施工阶段 剪力滞
Keywords:
super wide concrete girder self-anchored suspension bridge construction process shear lag
分类号:
U448.25;U445;U445+.5
DOI:
10.3969/j.issn.1671-7627.2019.01.016
文献标志码:
A
摘要:
为了分析自锚式悬索桥超宽混凝土箱梁在施工过程中的受力状态,通过实桥应力测试和Midas/FEA有限元分析,研究了超宽加劲梁的纵向应力水平及其分布规律。研究结果表明:在体系转换过程中,主缆轴力逐渐增大,且主梁顶板纵向压应力整体逐渐增大,梁底板纵向应力的变化与主梁的挠度变形密切相关。在施工过程中,各测点纵向应力实测结果与计算结果吻合良好,超宽加劲梁受力空间效应明显,主梁各截面纵向应力沿横截面的分布具有明显的不均匀性。主梁中跨跨中与边跨跨中截面剪力滞效应均表现为由正剪力滞向负剪力滞转换,且主梁中跨跨中截面纵向应力变化及剪力滞效应较边跨跨中明显。
Abstract:
To investigate the mechanic properties of the super wide concrete girder of self-anchored suspension bridge during construction process,the longitudinal stress levels and transverse distribution of the super wide girder were analyzed by the field measurement and Midas/FEA finite element analysis.Results showed that the longitudinal stress of top plates of the girder gradually increased with the increase of cable force and the longitudinal stress of the bottom plates of the girder was strongly related to the deflection of the girder during system transformation process.During construction process,the calculated results of longitudinal stress were consistent with the measured data.The spatial effect of the super wide girder was obvious and the longitudinal stresses of the top and bottom plates of girder distributed unevenly along the transverse direction of girder.The shear lag effects of all spans showed the transformation effect from the positive shear lag to negative one.The variation of longitudinal stress and shear lag effect of mid-span were more significant compared with side span.

参考文献/References:

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相似文献/References:

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备注/Memo

备注/Memo:
收稿日期:2017-03-13
基金项目:国家自然科学基金重点项目(51438002); 国家自然科学基金(51278104); 高等学校博士点专项基金(20133204120015); 江苏省高校自然科学研究项目(12KJB560003)
作者简介:解增援(1991—),男,E-mail:15150537721@163.com; 李爱群(联系人),教授,E-mail:aiqunli@seu.edu.cn.
引用本文:解增援,李爱群,李建慧,等.施工阶段自锚式悬索桥超宽混凝土箱梁纵向应力分析[J].南京工业大学学报(自然科学版),2019,41(1):104-111..
更新日期/Last Update: 2019-02-26